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Finding the Fourth Proportional to 41,091.60, 61,619.40 and 18,897.60

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Solution

The fourth proportional to 41,091.60, 61,619.40 and 18,897.60 is: 28,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,091.60 : 61,619.40 = 18,897.60 : x
  2. Step 2: Convert to fraction form
    41,091.60/61,619.40 = 18,897.60/x
  3. Step 3: Cross multiply
    41,091.60x = 61,619.40 × 18,897.60
  4. Step 4: Simplify right side
    41,091.60x = 1,164,458,773.44
  5. Step 5: Solve for x
    x = 1,164,458,773.44/41,091.60
  6. Step 6: Final answer
    x = 28,338.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.